Both cards are based on the same technology found in the ATI Radeon HD 4800 series, including support for the latest DirectX 10.1 games and HD multimedia capabilities.

Delivering mainstream-class performance at a value price, the ATI Radeon HD 4550 graphics card plays demanding game titles previously unplayable by cards in this price segment, and for less than USD $59 for a 512MB memory configuration. An even more value, the ATI Radeon HD 4350 graphics card is the ideal introduction to the ATI Radeon HD 4000 series, priced for less than USD $39 for a 256 MB memory configuration.

Derived from the same technology found throughout the ATI Radeon HD 4800 family of products and featuring 80 stream processing cores, the card is based on the AMD advanced second generation 55nm process. With 96 GFLOPS of compute power, a GPU clocked at 600MHz and a memory clock set at 800MHz, the ATI Radeon HD 4550 allows users to unlock new gaming experiences never before playable in this segment, with full support for DirectX 10.1 games. With increased power efficiency, operating at less than 20 watts under full load, the ATI Radeon HD 4550 is available as a passively cooled solution. The ATI Radeon HD 4550 with a frame buffer of 512MB DDR3 memory is expected to be available in October.

With certain card configurations offering more than seven times the gaming performance compared to competing integrated motherboard graphics offerings, the ATI Radeon HD 4350 graphics card marks a low-cost introduction to the ATI Radeon HD 4000 series family. Consuming just 20 watts under full load and featuring a frame buffer of 256MB memory, engine clocked at 600MHz, mempry clock at 500MHz and 7.1 channel audio via HDMI, the ATI Radeon HD 4350 is also expected to be available in October.

Home theatre enthusiasts should also appreciate the ATI Radeon HD 4550 or the ATI Radeon HD 4350 graphics offerings. Like all ATI Radeon HD 4000 series products, the home theater experience is enriched with features such as AMD's second generation Unified Video Decoder (UVD 2.0) ensuring smooth HD media playback, and ATI Avivo HD technology.